Omaha, Nebraska weather in September

Averages from 2021–2025 (150 days of record).

Average high: 81°F
Average low: 61°F
Rainy days: ~4 per month
Total precipitation: 1.5 in
Warmest recorded: 96°F
Coldest recorded: 45°F

Expect September days in Omaha, Nebraska to top out around 81°F and cool to about 61°F overnight, with roughly 4 days of measurable rain across the month. In recent years September has ranged from 45°F to 96°F.

Other months

January February March April May June July August October November December

Current Omaha, Nebraska forecast → · Historical data by Open-Meteo (ERA5).